Split-lap preventer



May 2 2,- 1923. 1,45%4

HARROP ET AL May 22, 1923.

W. HARROP ET AL SPLIT LAP PREVENTER FiledMarch 25, 1922 2 Sheets-Sheet 2wuwwtozs W Harro F. fiez il P Patented WILLIAM HARROP, PETER REILLY, ANDPATRICK F. FARRELL, OF NEW BEDFORD,

MASSACHUSETTS.

SPLIT-LAP PREVENTER.

Application filed March 25, 1922. Serial No. 54:6,783.

To all whom it may concern:

Be it known that we, WILLIAM Hennor, PETER REILLY, and PATRICK F.FARRELL, citizens of the United States, residing at New Bedford, in thecounty of Bristol and State of Massachusetts, have invented certain newand useful Improvements in Split- Lap Preventers, of which the followingis a specification, reference being had to the accompanying drawings.

This invention relates to cotton yarn forming machinery, andparticularly to sliver lap machines or to machines of like character,such as pickers, ribbon lappers, etc.

In the operation of machines of the character described, and-where asliver lap or.

thin layer of carded or partially combed cotton is wrapped spirally upona receiving roll, there is a liability of the material.

thread between the layers of sliver as they are wrapped upon thereceiving roll or spool.

A further object is to provide an attach ment for sliver lap machines,pickers, ribbon lappers, etc., whereby this separating thread may belaid upon the upper surface of the sliver as it passes between thecalender rolls, and furthermore whereby this thread may be laid in azigzag course across the upper face of the sliver.

Still another object is to provide means whereby the usual stop motionof the sliver lap or equivalent means maybe caused to be actuated uponthe breaking of the thread.

Another object is to so construct the attachment that the thread may befed to the machine between the sliver lap and the upper calender rollswith a sufficient tension and may be fedat a speed corresponding to rOur invention is illustrated in the accompanying drawings, whereinFigure 1 is a fragmentary side elevation ofa portion of a sliver lapmachine showing our invention applied in connection with the calenderrolls thereof;

Figure 2 is a front elevation of the cal--. ender rolls and ourmechanism applied thereto;

Figure 3 is a longitudinal sectional view through the housing enclosingthe worm;

Figure 1 is a face view of the lap after the thread Y has been appliedthereto.

In Figure 1, we illustrate sufficient of a to show the application ofour invention, and in these drawings A-A indicate an upper pair ofcalender rolls, 13-13 the lower pair of calender rolls, C the draftrolls, D the spool upon which the lap is being wound. or wrapped, andE-E the usual fluted lap rolls which support the wooden spool E. All theparts are of any suitable or usual construction, it being understoodthat the sliver passes from the usual cans through guides (not shown) tothe draft rolls C and thence between the calender rolls A and B, andfromthence to the winding spool'D. The sliver passin between thecalender rolls is designated Our attachment comprises supports 10 iwhich are attached to the frame of the sliver sliver lap machine ofordinary construction slightly in advance of the series of calenderrolls. This frame supports upon it a shaft 11 carrying a pulley 12 androtated by a rope drive 13 from the main shaft of the machine, thisshaft 11 carrying upon it a reversely screw-threaded worm or equivalentmember 14 having acontinuous screwthread. Operatively engaged by thisworm and, therefore, traveling back and forth across the machine is atraveler 15. This traveler has an arm 16 projecting outward therefrom,which carries an trumpet 17 at its forward end. The upper ends of thebrackets or supports 10 carry a tranverse rod 18.

The thread which is to separate the two adjacent layers of sliver iswound upon a roll 19, the periphery of the roll of thread resting uponthe upper calender rolls A..

is provided; with an electrical stop motion Inasmuch as these calenderrolls rotate in a counter-clockwise direction, it will be obvious thatthe roll 19 will rotate in a clockwise direction and, that as themachine op erates the thread will be drawn off the roll 19 down throughthe trumpet 17-.- This read: teas s be ea h pp r a en er rolls A andrests uponthe upper face. of the sliver lap X which is passing betweenthe rolls. The traveler 15 has a traverse equal in width to the Width ofthe lap or sliver and as a consequence the thread will be laid in azigzag fashio n upon the upper face of the sliverfas illustrated inFigure 4, and this thread will thus be disposed between the layers ofsliver on the lap spool B, separating these layers and preventing themfrom becoming ent ngled. It will be seen thatthe thread'is drawn inbetween the rolls and the lap at a speed equal to that of "the lap,and-that there is only a slight tension on thisthre ad because of thefact that the roll 19 is positively rotated by the calender rolls.

Every sliver lap machine or ribbon lapper whereby in case the lapbecomes thin or brealrs,"tlie machine will be immediately brought to astop by the closing of a circuit 39 tliiiciujgil the metallic parts ofthe machine,

circuit being normally held open by the interposition 'of the lapbetween certain metallic'par'ts, In order 'to provide means forstoppingthe machine in case the separating breaks, we mount uponthe.travel a thread "l5the angular lever 20. This} lever is pivotallymountectupon the traveler and its longer arm extends downward andrearward toward, the calender roll- A, while the shorter arm of'thelever extends down-' ward and forward; and is formed with an elongatedeye,.2 1, beneath which the thread passes. This elongated eye 21 is sodisposed that the thread in" its passage ,from, the, trumpet to thecalender roll frictionally engage this eye and tend to draw it downward,thus lifting the rear arm ofi'iof'the calender roll. If, for any reason,the threadv Y should break and,

'the truinpetflT the calender 'rollbe relaxed, the eye 21 willmoveiupward and the arm 22will' move downward and into, electrical.engagement with the calender roll.

' This will energize an electro-magnet, which in turn willi a ctto drawsuitable stopjnto position in front of an arm on therock shaft of themachine and thus stop the op-- eration of the machine in a, manner wellU known to those who are skilled in the art,

n much s, t is; m chanism wh We have describedfis simply-a means forclosing a circuit and thereby? stopping: the machine by the ordinarystop mechanism common to these machines, we have not indicated theposition in front of 1 an arm 28 on a rock shaft 29, this rock shaftbeing found on all machines and being used for the purposeof stoppingthe machine, in the well known manner.

We have illustrated diagrammatically the Y lever 20 and the forwardcalender roll- A as being electrically connected by wires d=irectly tothe battery 25, but it wifllbe under stood that these wires 23 and 24-are merely symbolic of any conductive circuit and-'- the circuit mightbe made through any metallic parts of the machine, and'the clrcuitmay beeither grounded at one end; or have a re turn conductor.

lVhile we do not wish to'be limited to the" particular arrangement ofthe worm 14,- we have lllustrated in Figure 3 a preferable construction.wherein the worm 14 is dis- 7 posed within a housing 30, the traveler 15- sliding upon this housing and: this traveler carrying an inwardlyextending pin 31 formed with a head 32 enga ing in. the screw thread inthe worm 14". stlie worm rotates continuously onefdirection, it will beobvious that the traveler, will slide back and forth in the mannerheretofore stated, the traveler being guided in the slot-33 of thehousing through which the pin 31 projects.

The operation of themechanism is obvious from what has gone before, andit will be seen that by the means whlch we have described a thread is lad down 111 a igzag path between the layers of lap astliey rolled upuponthe receiving roll so" that the layers are to thisextent'separatedand there is no possible chance for any splitting ofthe lap, e do notwish to be limited to the particular form of. traverse mechanism shownfor causing the traverse'of the travel er 1 5, but this traversemechanislmis sim ple, positive and thoroughly effective for the purpose.Other details might be modified in many ways without. departingfroinithe spirit of the invention as definediinl the appended claims.

We clairn r+ 1-. Inamj the combination with a winding spo w ch heap-.isw ensi Qfim ars fe dispos ns a ep aties, hread n a approximate y,zigzagline uponthe face ofthe appear to its passage "to" the'windingspool.

ashine f. he arac er scribed; 'QPQI? Y alternately in opposite 2. Thecombination with a sliver lap machine including rolls between which thelap passes, and a winding spool upon which the lap is wound, of meansfor disposing a separating thread in a zigzag line upon the face of thelap prior to its passage to the winding spool.

3. A sliver lap machine including calendering rolls, a winding spool,and means for disposing a separating thread upon the lap prior to itspassage to the calendering rolls, and in a zigzag course over the faceof said lap.

4:. A sliver lap machine including calendering rolls, a winding spool,and means for disposing a thread in a zig zag course upon the face ofthe lap prior to its passage through the calendering rolls and includinga traveler having a thread guide, and means acting to cause the traverseof said traveler alternately in opposite directions transverse to thepath of movement of the lap.

5. A sliver lap machine including calendering rolls, a winding spool,and means for disposing a thread in a zigzag course upon the face of thelap prior to its passage through the calendering rolls and including atraveler having a thread guide, means acting to cause the traverse ofsaid traveler directions transverse to the path of movement of the lapincluding an endless reverse screw with which the traveler engages, andmeans connected to the driving mechanism of the machine for rotatingsaid screw.

, 6. A sliver lap machine including calendering rolls, a winding spool,and means for disposing a thread in a zigzag course upon the face of thelap prior to its passage through the calendering rolls and including atraveler having a thread guide, means acting to cause the traverse ofsaid traveler alternately in opposite directions transverse to the pathof movement of the lap, and a thread containing spool resting upon theupper calendering rolls, the thread passing to and through the guidecarried by the traveler. I

7. In a sliver lapimachine, upper and lower pairs of calendering rolls,alap receiving spool, and means for laying a thread in a zigzag courseupon the face of the lap prior to its passage through the calenderingrolls comprising a thread spool, a thread guide, a traveler having atrumpet, and means for giving a reciprocation to the traveler transverseto the'path of movement of the lap, the thread from said spool passingover the first named guide and to said trililmpet and thence between thecalendering r0 s.

8. A method of preventing split laps consisting in laying between thelaps a thread having portions extending transversely of the lap.

9. A method of preventing split laps consisting in disposing a thread ina zigzag course between the contacting faces of adjacent laps.

10. A sliver lapping machine including a receiving spool upon which thelap is wound,

means for laying a thread in a zigzag course upon the face of the lapprior to its being wrapped upon the receiving spool, and means forstopping the sliver lapper in case said thread breaks.

11. A sliver lapping machine including a receiving spool upon which thelap is wound, means for laying a thread in a zigzag course upon the faceof the lap prior to its being wrapped upon the receiving spool, meansfor stopping the sliver lapper in case said thread breaks including anelectrically actuated stopping mechanism, and contacts adapted to closea circuit through the stopping mechanism, said contact being nor mallyheld in an open circuit position by the passage of the thread.

12. A sliver lapping machine including a receiving spool upon which thelap is wound,

means for laying a thread in a zigzag course upon the face of the lapprior to its being wrapped upon the receiving spool, means for stoppingthe sliver lapper in case said thread breaks including an electricallyoperated stopping mechanism normally in an open circuit with a source ofcurrent, and a lever adapted to close said circuit and having an eyefrictionally engaged by the thread when the thread is under tension, theengagement of the thread with the lever holding the lever in an opencircuit position.

In testimony whereof we our signatures.

WILLIAM HARBOR PETER REILLY. PATRICK F. FARR-ELL.

hereunto aiiix

